hubbard



(No Model.)

- F. HMHUBBARD. DISINFEGTING APPARATUS.

N0. 282,195. Patented July 31, 1883.

ATTORNEYS.

WINVEN'IOR wmqissss UNITED. STATES PATENT OFFICER.

1 EREDERIcK HUBBARD, OF

BROOKLYN,

NEwYoRK, AssIeNoE TO HIM- l sELEAnD HIRAM BEEBE, OFSAME PLACE.

D ISI'NF EiTIN G APPARATUS.

SPECIFICATION forming part of Letters Patent No. 282,195, dated July 31, 188 3. d

x Application filed April 520, 1883. (N0 model.)

T0 all whom it may concern;

and State of New York, have invented a new" and useful Improvement in 'Chemi caIAjr- Purifiers, of which the following is a full, clear, and exact descriptiong Reference isto be had to the accompanying drawings, formihg a part of this specification, in which similarletters of referenceindicate corresponding parts inall the figures. Figure l is a sectional front elevation of my improved apparatus. Fig. 2 isa plan view of the same, the casing being removed and parts of the cylinder-covers being broken away. Fig.

3 is a plan viewof the same, the cylinders being removed and part of the casing-covering being broken away.

The object of this invention is-to purify the air in ice-boxes, store-rooms, sleeping-rooms, water-closets, and other apartments and places by introducing into such apartments continu-.

ously air impregnatedwith suitable chemi-.

cals.

. The invention consists in a chemical airpurifier consisting of a cylinder having. a perforated bottom and a close cover provided with a discharge-pipe,with a cylinder provided with a closecover having a discharge-pipe, an upper annular cup,havingaperforated bottom,

a lower annular cup having a close bottom, and

' a box to support the cylinders, and provided with a fan-blower and a fan-driving mechanism. The upper annular cup is provided with a lining of asbestus cloth and of asbestus paper, and beneath it is" suspended a diaphragm of asbestus cloth, whereby a liquid chemical will be brought into intimate contact with a current of air forced through the cylinder, as will be hereinafter fully described.

A B are two cylinders of any desired height and size, reference being bad to the volume of air necessary to do the required work. The cylinders A B are made of sheet metal or other suitable material, and are connected at their upper parts by straps O, soldered or otherwise secured to the said parts, and at their lower ends by a plate, D, closing the space between the said cylinders, fitting into the top of the fan-box E, and provided with a flange, F,to 5o {restupon the upper edge of the said fan-box E and support the said cylinders A B. In the middle part of the fan-box E is. formed a fcylindrical compartment, G, within which is placed a fan-wheehH, so formed as todraw fair in through openings I in the bottom of the icompartmentj or chamber G and force it up through the cylinders A B. The shaft J of the fan-wheel H passes down through the bottom of the chamber G, and is connected by a train of gear-wheels, K, with a coiled spring, L, by which motion is given to the fan-wheel. The shafts of the fan-wheel H, gear-wheels K, and spring L are journaled to a frame, M, I placed below the fan-box E, andv by which the Isaidfan-boX E and the cylinders AB are supported.

In case the apparatus should be too large for the fan-wheel H to be driven by a spring, it can be driven by a belt from asteam-engine or other convenient power. a

The cylinders A B are provided with closelyfitting covers N, which are provided with discharge-openings, in which are secured pipes 0,

through which the air passes into the room, or 7 ter the said cylinder from the fan-box E, while preventing thesubstance placed in the said cylinder from escaping.

Upon the innersurface of the cylinder B, at a suitable distance from itslower end, is secured an annular flange, Q, upon which rests the annular flange R, formed around the upper edge of the annular cup S, so .as to support the said cup and its contents. The inner wall of the cup S is tapered upward, so that the upper aperture may be as small as possible 0 without obstructing the passage of air through the centralopening of the said cup. I

In the upper end of the cylinder B is placed an annular cup, T, which has a narrow outwardly-projecting flange, U, around its upper 5 edge, to rest upon a narrow inwardly-project flange, V, upon the inner surface of the cylinder B, close to its upper edge. The bottom of the cup-T is finely perforated, and the said cup is lined with an outer layer, a, of asbestus cloth and an inner layer, 1), of asbestus paper, to secure-a slow and steady percolation of the liquids placed in the said cup T to and through its perforated bottom. Below the perforated bottom of the cup T is a placed a diaphragm, W, of asbestus cloth, the edges of which are placed and clamped between the sides of the cup T and the sides of the cylinder B, so that the liquids that drip from the said cup T will fall upon, be detained by, and will percolate through the said diaphragm. By this arrangement the liquids escaping from the cup T will be minutely divided, and thus brought into contact with all the particles of air forced up through the cylinder B, so that the said air will become thoroughly charged with the vapors of the said liquids before it escapes from the said cylinder.

In using the apparatus the cylinder is filled with charcoal, which is then saturated with sulphuric acid or other liquid that the circumstances of the case may require. The charcoal, being very porous, will absorb a large quantity of the liquid chemical, and will give off the fumes of the said chemical gradually, which fumes will be taken up and carried into the room by the air forced through the cylin derby the fan-blower. As the charcoal parts with the liquid chemical it begins to absorb the poisonous gases, and will thus act as a powerful purifier. The cup T is supplied with permanganate of potash or chloride of zinc, and is then filled with water, and the air will be charged with the vaporized chemicals as it is forced up through the said cylinder, as hereinbefore described, and will carry the said vapors into and distribute them through the room.

By the means herein described the air in the room, rooms, or house will be deprived of its virulent odors, the poisonous gases will be absorbed, and the pestiferous germs will be destroyed, making the said air pure and health-producing.

The apparatus is designed to'be inclosed in a casing, X, made of wood or other suitable claim as new and desire to secure by Letters Patent- 1. A chemical air-purifier constructed sub stantially as herein shown and described, and consisting of the combination of cylinder A, having aperforated bottom, and a close cover provided with a discharge-pipe, with the eylinder B, provided with a close cover having a perforated bottom, and a lower annular cup having a close bottom, and also with a supporting-box provided with a fan-blower and a fandriving mechanism, as set forth.

2. In a chemical air-purifier, the combination, with the cylinder B, of the upper annular cup, T, having perforated bottom, the asbestus layers a b, and the diaphragm W, the

lower annular cup, S, having close bottom, and the fan-blower G H, substantially as herein shown and described.

'3. The cylindrical drip-cup T, having the perforated bottom covered with a layer of as bestus cloth and provided with an upper layer of asbestus paper, to secure a slow and steady percolation of the liquid placed in the said cup, as described.

4. In a chemical air-purifier, the combination, with the containing-cylinder, of the perforated drip-cup T and of the diaphragm W, formed of .asbestus cloth and arranged under the bottom of said cup, to minutely subdivide the liquid, as described.

FREDERICK H. HUBBARD.

Witnesses:

J AMES T. GRAHAM, G. SnnewIcK.

discharge-pipe, an upper annular cup having 

